Critical exponent ω at O(1/N) in O(N)×O(m) spin models Original Research Article

We compute the O(1/N) correction to the stability critical exponent, ω, in the Landau–Ginzburg–Wilson model with O(N) × O(m) symmetry at the stable chiral fixed point and the stable direction at the unstable antichiral fixed point. Several constraints on the O(1/N) coefficients of the four loop perturbative β-functions are computed.